Beach mat



FIG. 1 is a front elevational view of a beach mat showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The large broken lines shown in the drawings represent stitching andform a part of the claimed design.

CLAIM The ornamental design for a beach mat, as shown and described.